
#include <stdio.h>

int main(int argc, char const *argv[])
{
    char str[1024] = {0};
    char *p = str;
    int a = 0, e = 0, i = 0, o = 0, u = 0;
    scanf("%s", str);

    while (*p != '\0')
    {
        switch (*p)
        {
        case 'a':
            a++;
            break;
        case 'e':
            e++;
            break;
        case 'i':
            i++;
            break;
        case 'o':
            o++;
            break;
        case 'u':
            u++;
            break;
        default:
            break;
        }
        p++;
    }

    printf("a:%d\ne:%d\ni:%d\no:%d\nu:%d\n", a, e, i, o, u);

    return 0;
}
